class Washer():
  def __init__(self,width,height):
    self.width = width
    self.height = height
  def __str__(self):
    return "这是海尔洗衣机的说明书"
  def __del__(self):
    print(f"{self}对象已经被删除")
haier1=Washer(10,20)
print(haier1)
del haier1